2009 Zagreb Open – Singles

Christophe Rochus was the winner in 2008, but he didn't play this year.

Marcos Daniel became the new champion. He defeated Olivier Rochus in the final of tournament.

Seeds
• # 🇫🇷 Nicolas Devilder (semifinals)

• # 🇺🇸 Robert Kendrick (second round)

• # 🇦🇷 Leonardo Mayer (first round)

• # 🇦🇷 Brian Dabul (quarterfinals)

• # Roko Karanušić (quarterfinals)

• # 🇧🇷 Thiago Alves (first round)

• # 🇧🇷 Marcos Daniel (champion)

• # 🇨🇿 Jiří Vaněk (first round)